Design solutions for improving the lowest buckling loads of a thin laminate plate with notch

The object of this study are thin-walled rectangular plates with a central cut-out under uniform compression. The load is applied to the shorter and at the same time free-supported edges of the plate. The plates are made of carbon-epoxy laminate. A numerical modal analysis is performed for a number...

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Bibliographic Details
Main Authors: Falkowicz, Katarzyna, Debski, Hubert, Teter, Andrzej
Format: Conference Proceeding
Language:English
Subjects:
Buckling
Carbon fiber reinforced plastics
Carbon-epoxy composites
Elastic plates
Finite element method
Laminates
Mechanical properties
Modal analysis
Numerical analysis
Rectangular plates
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Summary:The object of this study are thin-walled rectangular plates with a central cut-out under uniform compression. The load is applied to the shorter and at the same time free-supported edges of the plate. The plates are made of carbon-epoxy laminate. A numerical modal analysis is performed for a number of cases where the plate with a central notch is longitudinally reinforced with isotropic strips fixed on the opposite sides of the plate. The main purpose of this study is to investigate the effect of the proposed design solutions on the buckling mode and buckling loads corresponding to the lowest buckling mode. The knowledge of these parameters will enable optimal design of elastic plate elements with predefined mechanical properties and designed mode of buckling. The eigen-problem was solved by numerical analysis using the finite element method.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5019075